"We would obviously stress for people to be careful when they are on the roads and to pay attention in particular to cyclists and pedestrians coming up to intersections so that we can avoid any more of these tragedies occurring," he said.

State Greens MP for the Western Metropolitan Region described the woman's death as an "unbelievable tragedy" but said cycling infrastructure in the area meant collisions were inevitable.

"My heart goes out to this young woman's family - but this was always going to happen. This is a really dangerous corner," she said.

She said truck traffic in the inner western suburbs had increased dramatically in the past 15 years.

"Living here, it can be just a nightmare," she said.

"They need signage. They need separation between trucks and cars and bikes. They need better bike lanes, and we need designated routes for cyclists so they don't have to actually compete with trucks."